k Daisy seed head, SEM Daisy seed head. Coloured scanning electron micrograph SEM of a daisy seed head with some florets removed. Daisy plants family Asteraceae, formerly Compositae have composite flowers comprising a central area of tubular disc florets not seen surrounded by larger ray florets which each have a single petal. During reproduction the disc florets are pollinated and form seeds known as cypselas. The cypselas become detached from the daisy and are carried on the wind to new ground where they germinate. The small circular scars right show where each of the seeds was attached to the flower. Magnification x20 when printed at 10cm wide, by STEVE GSCHMEISSNERSCIENCE PHOTO LIBRARY Stock Photo - Afloimages
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Daisy seed head, SEM Daisy seed head. Coloured scanning electron micrograph  SEM  of a daisy seed head with some florets removed. Daisy plants  family Asteraceae, formerly Compositae  have composite flowers comprising a central area of tubular disc florets  not seen  surrounded by larger ray florets which each have a single petal. During reproduction the disc florets are pollinated and form seeds known as cypselas. The cypselas become detached from the daisy and are carried on the wind to new ground where they germinate. The small circular scars  right  show where each of the seeds was attached to the flower. Magnification: x20 when printed at 10cm wide, by STEVE GSCHMEISSNER SCIENCE PHOTO LIBRARY
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Daisy seed head, SEM

Daisy seed head. Coloured scanning electron micrograph (SEM) of a daisy seed head with some florets removed. Daisy plants (family Asteraceae, formerly Compositae) have composite flowers comprising a central area of tubular disc florets (not seen) surrounded by larger ray florets which each have a single petal. During reproduction the disc florets are pollinated and form seeds known as cypselas. The cypselas become detached from the daisy and are carried on the wind to new ground where they germinate. The small circular scars (right) show where each of the seeds was attached to the flower. Magnification: x20 when printed at 10cm wide, by STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

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